Method for use in attaching soles to shoes



s. J. FINN 7 ,300,540

METHOD FOR USE IN ATTACH ING SOLES TO SHOES Original Filed July 26, 1939 Patented Nov. 3, 1942 METHOD FOR USE IN ATTAGHING S-OLEKS TO SHOES Sidney J. Finn, Beverly, Mass, assignor to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Original application July 26, 1939, Serial No.

286,600. Divided and this application September 16, 1940, Serial No. 356,918

7 Claims. (01;. 12 142) This invention relates to methods for use in cement-attaching soles to shoes and particularly to methods of locating a shoe and sole prior to the application of sole-attaching pressure.

The method may be practised by the use of apparatus disclosed in Letters Patent of the United States No. 2,262,759, granted November 18, 1941, upon my application, of which this application is a division, this apparatus being preferably embodied in a machine of the type disclosed in United States Letters Patent No. 2,047,185, granted July 14, 1936, upon the application of Ballard et al.

Objects of this invention are so to locate a shoe and sole relatively to each other prior to the application of sole-attaching pressure that when the shoe and sole are pressed together the length of the shank portion of the sole will correspond substantially to the length of the shank portion of the shoe against which it is laid.

The present method consists in relatively locating a shoe and sole while they are spaced from each other and causing the shank portion of the sole to bulge upwardly prior to applying the sole-attaching pressure whereby the length of the shank portion of the sole corresponds substantially to the shank portion of the shoe to which it is to be attached so that no stretching of the sole material is necessary in order to lay it properly against the shank portion of the shoe. This method insures against any stretching of the shank portion of the sole during the sole-attaching operation which, after the shoe is removed from the press, might cause the sole to react and weaken the bond between the shoe and sole,

In the drawing,

Fig. 1 illustrates that step of the present method in which a shoe and sole are located with respect to each other while they are out of contact;

Fig. 2 illustrates that step of applicants method in which a bulge is produced in the shank portion of the sole so that the length of the portion of the sole which is laid against the shank of the shoe will correspond substantially to the length of the shank of the shoe; and

Fig. 3 illustrates the step of pressing the shoe and sole together.

In practising my method by the use of apparatus such as that disclosed in my prior patent above referred to, the toe portion of an outsole U is located on a sole-attaching pad ID by a V-gage l2 which engages opposite sides of the toe portion of the sole 0.

is located by a tongue l4 having a pin [0 which engages a hole punched in the sole 0. The toe portion of a shoe S is located with respect to the toe porion of the sole i2 by means of a. V- gage l8 which engages opposite sides of the toe portion of the. shoe and has suflicient height- Wise extent relatively to locate the. toe ends of the shoe and sole while they are separated. a substantial distance from each other. The rear end of the shoe S is located with respect to the tongue It by a V-gage 20 which is pressed yieldingly against the rear portion of the shoe and is movable heightwise of the pad Ill.

The shoe and sole having been located with respect to each other, as illustrated in Fig, 1, the tongue (4 is pushed forwardly, as illustrated in Fig. 2, causing the shank portion of the outsole 0 to bulge away from the pad it into the space between the shoe and the pad. There is thus provided a length of outsole material suificient to line the upward curve of the shank portion of the shoe whereas, if no such fullness is provided, the shoe may stick to the sole at the ball and at the breast line, the shank portion of the sole bridging the shank curve of the shoe so that, in order to bring the shoe and sole together, the shank of the sole must stretch or the cement bond break.

Having caused the sole to bulge toward the shank, as shown in Fig. 2, the final step of pressing the shoe and sole together is efiected as illustrated in Fig. 3 in which, by a relative movement of the pad l0 and abutments 22, 24 heightwise of the shoe, the shoe and sole are pressed together to effect cement-attachment of the shoe and sole.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. That improvement in methods of cementattaching soles which comprises locating an end portion of a sole relatively to a shoe, locating the opposite end portions of the sole and shoe relatively to each other, moving one of said end portions of the sole but not the other relatively to the shoe to produce a bulge in the shank portion of the sole prior to applying pressur to the shoe or sole, and then applying pressure toforce said shank portion of the sole against the shank portion of the shoe bottom.

2. That improvement in methods of cementattaching soles which comprises locating one end of a sole relatively to a shoe bottom, locating the opposite ends of the sole and shoe relatively to The heel end of the sole 0 each other, moving one end of the sole length- Wise relatively to the shoe bottom, while holding the other end against movement relatively to the shoe, to produce a bulge in th shank portion of the sole before applying pressure to the shoe or sole, and then applying pressure to force the shank portions of the sol and shoe into close contact with each other.

3. That improvement in methods of cementattaching soles which comprise locating th toe end portion of a sole relatively to th corresponding end portion of a shoe bottom, holding said shoe and sole in said relativepositions, locating the heel end portions of the soleand shoe relatively to each other whil holding said heel end portions out of contact, producing a bulge in the intermediate portion of the sole without applying heightwise pressure thereto and while said heel end portions are maintained out of contact with each other, and applying pressure heightwise to the shoe to force the bulged portion of the sole against the corresponding portion of the shoe bottom and thereafter to bring said end portions into contact with each other to cementattach the sole to the shoe bottom.

4. That improvement in methods of cementattaching soles which comprises relatively locating the forepart of a shoe and sole, while maintaining said relative location preventing contact of the rear part of the shoe with the rear part of the sole, producing by stress applied endwise to the rear end of the sole a longitudinal bulge in the shank of th sole, and then applying prespart of the sole to bulg the sole toward the shank of the shoe, and applying pressure to force the shoe and sole into contact.

6. That improvement in methods of cementattaching soles which consists in relatively locating a shoe and sole out of contact with each othenand thereafter, while the sole and shoe are out of contact, causing the shank portion of the sole to assume a longitudinal curvature corresponding substantially to the longitudinal curvature of the shank of the shoe prior to the application of sole-attaching pressure.

7. That improvement in method of cementattaching soles which consists in relatively locating a shoe and sole having active cement on one at least of their adjacent faces out of contact with each other, thereafter, while the sole and shoe are out of contact, causing the shank pOrtion of the sole to assume a'longitudinal curvature corresponding substantially to the longitudinal curvatur of the shank of the shoe prior to the application of sole-attaching pressure, and applying pressure to force all parts of the cemented surfaces together.

SIDNEY J. FINN. 

